While I have the FR Atlas, I'd like to see things go to the next level. =)
Session Reports posted at RPG Geek. Stem the Tide Takes place in Mistledale. Dark Curtains - Takes place in the Savage North, starting in Nesmé. I wrapped my campaign into the Hoard of the Dragon Queen, but it takes place in 1372 DR.
There are very few campaign worlds out there that I could see would get full appreciation for being Outerra'ed. The Forgotten Realms ... is on that short list. I can't see Hasbro/WotC having the vision to do something on this grand of a scale. But perhaps so as a collaborative fan project.